gills

Hi everyone Happy Sunday to you all One of my black widow tetra has having abnormal gills. I am unable to figure out what problem or disease it is. Could you please let me know about it and guide me how can I cure it. Please find the attachments for your reference Thank you everyone

I am having a problem with my female guppy tank, 10 gallons 5-6 months old, all my parameters are all spot on, I do weekly 50% water changes, there are 7 adult females and around 20 something fry including accidentally breed some muppies (balloon Molly female/male guppy) is it just to...